Molecular models of rubber and gutta-percha. These molecules are isomers. They have the same chemical fourmula but a different molecular structure. In this example,gutta-percha is the trans isomer (the side-chains alternate) and rubber is the cis isomer (the side-chains are on the same side). Gutta-percha is obtained from the Isonandra gutta tree,while rubber is obtained from the Hevea braziliensis tree. The difference in molecular structure means that gutta-percha has a higher melting point than rubber | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
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